Paper Info
Title
Power and Load Optimization in Interference-Coupled Non-Orthogonal Multiple Access Networks.
Abstract
Towards energy savings in large-scale non-orthogonal multiple access (NOMA) networks, we investigate power and load optimization for multi-cell and multi-carrier NOMA systems in this paper. To capture the coupling relation of mutual interference among cells, firstly, we extend a load-coupling model from orthogonal multiple access (OMA) to NOMA networks. Next, with this analytical tool, we formulate the considered optimization problem in NOMA-based load-coupled systems, where optimizing load, power, and determining decoding order are the key aspects in the optimization. Theoretically, we prove that the minimum network energy consumption can be achieved by using all the time-frequency resources in each cell to deliver users' demand. To achieve the optimal load and enable efficient power optimization, we develop a power-adjustment algorithm. Numerical results demonstrate promising energy-saving gains of NOMA over OMA in large-scale cellular networks, in particular for the high-demand and resource-limited scenarios.
Year
DOI
Venue
2018
10.1109/GLOCOM.2018.8647669
IEEE Global Communications Conference
Keywords
Field
DocType
Non-orthogonal multiple access (NOMA),load coupling,large-scale network,resource allocation,energy optimization
Noma,Mathematical optimization,Power optimization,Computer science,Communications system,Real-time computing,Resource allocation,Cellular network,Energy consumption,Optimization problem,Access network
Conference
ISSN
Citations 
PageRank 
2334-0983
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Lei Lei122622.40
Lei You26010.31
Yang Yang37514.89
Di Yuan416810.92
Symeon Chatzinotas51849192.76
Björn Ottersten6568.40